INSTALLATION
3-34 EPT019297 Issue 1 November 2016
External Quadrature Shaft Encoder Setup
If the production line can change direction, a quadrature shaft encoder can be used to measure
the production line’s speed and detect the direction of travel. Four different encoder modes are
available to define the printers behaviour when the direction changes.
To setup a quadrature shaft encoder:
(1) Create a test label.
(2) Select the Label tab in the label creator side menu and select Settings.
(3) Scroll down to the Width setting and make a note of the value.
(4) Select the Print icon to send the label to print.
(5) Select Home > Production line setup > Line movement.
(6) Select the Encoder input drop down setting and select External.
(7) Select Set calibration settings.
(8) To calibrate the shaft encoder, the production line will need to run for a measured distance.
Enter the distance that the production line will run for in the Calibration distance (mm)
setting.
(9) Select Start.
(10) Run the production line over the distance that was set at step (8).
(11) Select Stop.
(12) Copy the Velocity encoder pulse count value and enter it into the Calibration pulse count
(pulses) setting.
(13) Select Save.
(14) Run the production line to make another test print.
(15) Measure the width of the test print, the test print should be equal to the Width setting noted
at step (3). If not, the Calibration distance (mm) value may be inaccurate. Or, the encoder
may have stopped at a position where the pulse signal is generated. This may cause the
encoder to send false pulse signals to the printer. The equation below can be used to
calculate the correct Calibration pulse count (pulses) value.
(16) If the label width needs to be adjusted after the Calibration pulse count (pulses) setting has
been set, adjust the Global stroke pitch goal (mm/stroke) setting to change the distance
between print strokes (Default value: 0.43mm).
Note: A print stroke is the line of ink drops which make up each printed character.
New pulse count (pulses) value = N
Old pulse count (pulses) value = O
Label width value = E
Printed label width = P
N = O x (E/P)
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